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The order will make federal funding available to supplement state and local recovery efforts in the regions affected by Kilauea's eruption May 3.

"Federal funding is available to the State and to eligible local governments and certain private nonprofit organizations on a cost-sharing basis for emergency work and the repair or replacement of facilities damaged by Kilauea volcanic eruption and earthquakes in Hawaii County," the government said in a statement late Friday.

Steam and gas rise in Leilani Estates in the aftermath of the Kilauea volcano eruption on Hawaii's Big Island, May 10, 2018, in Pahoa, Hawaii.

In a letter dated Wednesday, Gov. David Ige had asked Trump to formally declare the state a "major disaster." Ige estimates that the costs to protect residents could exceed $2.9 million over the next month.

"As more fissures open and toxic gas exposure increases, the potential of a larger scale evacuation increases. A mass evacuation of the lower Puna District would be beyond current county and state capabilities, and would quickly overwhelm our collective resources," Ige said in a statement announcing his request.

"Federal assistance would be necessary to enable us to successfully conduct such large-scale operations," Ige added.

Ige wrote that millions of dollars are currently needed to protect residents who have been threatened by "lava intrusion and the accompanying earthquakes and gas emissions."

Additional funds are needed to address the permanent damage the volcanic activity and earthquakes have caused, he added.

Hawaii declared a state of emergency on May 3, the day volcanic activity began.